I am a newbie and I have 3 questions regarding the swordmage starter rotation that you wrote:

For Step 3: Lightning Orb, 1 Lambent Bolt, Lightning Orb follow up

1) After I use Lightning Orb follow up with Lambent Bolt, I canâ€™t use Lightning Orb soon again, I need to wait 10 seconds for the first Lightning Orb to cool down.. This cause delay in my attack do I wait for the cooldown, or can I just jump to the next step, fire-> angelfire-> lambent bolt etc?

2) How do I reduce the cooldown time of Lightning Orb?

3) What about special skills like Nimbus Reign? Where can I put Nimbus Reign into my rotation?

It seems like you are in the wrong stance. You can use Lightning Orb follow up only if you are in Lightning stance. In fact you should not need to change out of Lightning except for 100% constantly moving targets such as bees in MHT. It should be very possible to use the follow up even with high ping. I play with 200+ms constantly.